Radium nitrate
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Chemical formula | Ra(NO3)2 |
Molar mass | 350.01 g/mol |
Appearance | White solid[1] |
Melting point | 280 °C (536 °F; 553 K) (decomposes) |
Solubility in water | 13.9 g/100 ml |
Solubility in nitric acid | Insoluble |
Related compounds | |
Other anions | Radium carbonate |
Other cations | Barium nitrate |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references |
Chemical compound
Radium nitrate is a radioactive salt with the formula Ra(NO3)2. It is a white solid, but old samples appear yellowish-grey. Although radium chloride and radium bromide are less soluble than the corresponding barium salts, radium nitrate is more soluble than barium nitrate.[1][2] It decomposes at 280 °C to radium oxide.[citation needed]
Production
Radium nitrate is produced by the reaction of radium carbonate or radium sulfate with nitric acid:[2]
- RaCO3 + HNO3 → Ra(NO3)2 + CO2 + H2O
References
- ^ a b Otto Erbacher (1930). "Löslichkeits-Bestimmungen einiger Radiumsalze" [Solubility determinations of some radium salts]. Chemische Berichte (in German). 63 (1): 141–156. doi:10.1002/cber.19300630120.
- ^ a b Kirby, H. W.; Salutsky, Murrell L. (1964). The Radiochemistry of Radium (PDF). National Academies Press. pp. 4–8.
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- Ra(N3)2
- RaCO3
- RaF2
- RaCl2
- RaBr2
- RaSO4
- Ra(NO3)2
- RaI2
- Ra(OH)2
- RaO
- Ra3N2
- RaWO4
- Ra(ClO3)2
- Ra(IO3)2
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